good to know says: Body dysmorphic disorder is a mental health problem affecting around 1 in 200 people. It means you have a distorted body image which causes you to hate a certain part of your body. Body dysmorphic disorder usually starts in the teenager years but can last a lifetime if it isn't treated. Sufferers rarely have anything seriously wrong with their physical appearance, but are convinced they look terrible and may want to hide away. Treatment for this distressing condition usually involves a combination of cognitive behaviour therapy (CBT) and anti-depressants, which can be very successful.
For a full medical explanation of the causes, symptoms and treatments of body dysmorphic disorder from patient.co.uk, read on